Tom Waits grew steadily less prolific after redefining himself as a junkyard noise poet with Swordfishtrombones, but the five-year wait between The Black Rider and 1999's Mule Variations was the longest yet. Given the fact that Waits decided to abandon major labels for the California indie Epitaph, Mule Variations would seem like a golden opportunity to redefine himself and begin a new phase of his career.